Zimly S3 Backup

Synchronise your media and documents to any S3 compatible storageGPL-3.0-only

StoneAge

A self-hosted P2P messenger - you will need an S3 bucket to use itGPL-3.0-only

Exfilac

Simple, reliable, automated S3 uploads for Android.ISC

Orgro

Live your life in Org Mode? Take it with you on your Android device.GPL-3.0-only

Cryptomator

Put a lock on your cloud: Take the security of your data into your own handsGPL-3.0-only

Resticopia

Restic Backup Android App (Unofficial)GPL-2.0-only

SnoopSnitch

Check mobile network securityGPL-3.0-only